Yesterday a website called findmakarov.com was revealed to some North American video games journalists via some bloody dog tags in the mail. Many believed that since the dog tags referenced Modern Wafare 2, that the countdown on the website was for the imminent announcement of Modern Warfare 3. However, Activision has said this isn't true.
In a statement sent out to many outlets, Activision said "Let me be clear we are not revealing yet. Anything indicating otherwise is a hoax."
Now, this means nobody, other than the perpetrators, has any idea what is actually going on. One things for sure though, when the timer hits 00:00:00 in around four days time, we'll hopefully have at least some answers.